To simplify the expression 3x-2 - 5x-1, you need to combine the like terms.
The expression has two terms with x, namely 3x and -5x.
3x-2 - 5x-1 can be rewritten as (3x - 5x) - 2 - 1, which simplifies to -2x - 3.
Therefore, 3x-2 - 5x-1 simplifies to -2x - 3.